Gang saw swaging machine



Jan. 19,.A 1954 Filed Feb. 19, 1952 R. S. RICHARDSON GANG sAw swAGING MACHINE sheets-sheet 1 INVENTOR. RALPH S. RICHARDSON ATTORNEY Jan- 19 19.54 R s. RICHARDSON 2,666,347

\ GANG SAW SWAGING MACHINE Filed Feb. 19, 1952 y 2 Sheets-Sheet 2 47 Il' 4I INVENTOR. RALPH S. RICHARDSON ATTORNEY any! Patented Jan. 19, 1954 UNITED stares .errer orties 2,656,347 GANG sAWsWAoING MACHINE Ralph S. Richardson, Sweet Home, Oreg.

Application February 19, 1952, Serial No. .272,307

My invention relates to improvements in ganeT saw swaging machines, and is particularly related to the saw clamping means and means for guiding the swaging device along the teeth in the swaging operation.

The primary object of the invention is to provide a clamp :for holding the saw, which is operated by an air cylinder, the said air cylinder holding the clamp in closed position on the saw while swaging the teeth.

A further object of the invention is the providing of guide rails for supporting the swage in relation to the saw teeth in the swaging operation.

Another object of my invention isvin the construction of the operating mechanism and swage whereby when the swage is located on the tooth and the control lever has been operated to lock the swage on the said tooth, the swaging lever will automatically be brought into operation swaging the tooth, after which the locking lever is released from the tooth and the swage moved forward on the guide rails by the operator to be again placed on the next tooth for swaging the same.

rlhese and other incidental objects will be apparent in the drawings, speciiication and claims.

Referring to the drawings:

Figure l is a side View of my new and improved swaging machine.

Figure 2 is a plan view of Figure l.

Figure 3 is an end View of Figure 1, taken on line 3 3, parts broken away Ifor convenience of illustration.

Figure e is an enlarged detail view of the air cylinder and its control, parts broken away for convenience of illustration. This is the position corresponding to Figures l and 2 wherein th swaging lever is about to be operated.

Figure 5 is the same as Figure 4, exceptthat the swaffing lever has been operated by its' operating piston, and is about to be returned to th n 4 Claims. (Cl. i6-52) rThe movable clamping member 8 consists of an angle bar 9, which is iixedly secured to the legs iii of 'the U-shaped lever il, as by bolts i2, referring particularly to Figures 1 and 3. The legs of the lever il) are journalled to the cross shaft I3, which is fXely secured to the brackets l. The said shaft IB providing a pivot point for the movable jaw assembly.

liixed'ly secured to the framework ifi of the base l is an air cylinder i5. The piston rod It of the air cylinder is pivotally connected to the lever il at il', and is adapted to pivot the lever EI about the pivot shaft It, moving the clamping member 8 away or towards the stationary jaw d.

The air cylinder it receives its air supply through a pipe line i8 through a valve i9. The valve i9 admits air into the cylinder when the lever l 9 is in the position shown in Figure 3, and it exhausts the air from the cylinder .i5 through exhaust port, not shown. The air may be entirely shut oir from the cylinder when the lever I9 Vis in a positionmidway between the said positions above described.

A spring 2t, having its one end connected at 2i to the lever II, and its opposite end connected to the cylinder I5 at 22, pulls the lever towards the cylinder pivoting the said lever about its pivot shaft i3, moving the clamping member S away from the stationary clamping member e. This spring tends to separate the clamping members li and 3 at all times, except when the air within the cylinder i5 overcomes the tension of the said spring, closing the clamping members by pivoting the lever I I about its piston i3.

The saw to be clamped between the clamping members d and 3 is indicated the letter A. The elevation of the saw between the clamping members is determined by the position elf the supporting brackets 2t, which are iixedly secured to the upper end of the gear racks by any member i is supported uponthe brackets or legsV 5, which in turn are secured to the top of the frame 3 by any suitable means, as'bolts EX- tending forwardly from the legs 5 are brackets l, `afshich support the movable clamping member suitable means, referring particularly to lzigures l, 2 and 3*. The elevation of the racks 2t are adjnsted by the hand wheel 25, which revolves the shaft 26 and the pinicns 27, raising or lowering the brackets 23 and the saw A to the desired height between the jaws l and 8. To take care of the'various lengths of saws being conditioned,

the clamping members andt E may be easily inf rEhe opposite end it' to the bracket di at 4l'.

of the legs having grooved wheels 36 operating on the rails Sii. rThe rails 3d are supported by and connected to the angle bars of the clamping members d and 8 by the threaded post 3l, the post forming part of the rails and passing through holes in the angles and being adjustably locked to the angle bars by the lock nuts 33. The grooves within the Wheels 36 are orf suflcient width to allow the stationary clamping member 8 and the rail 34 to move without eiecting the support of the carriage 29. As a matter of fact, the movement of the stationary clamping member 8 is so slight that it is hardly noticeable.

The swaging tool 28 has the usual control lever 39 for locking the swage to the tooth to be swaged. The swaging lever 52, instead of being operated by hand as in the usual case, is operated by an air cylinder 3d which is pivotally mounted to the carriage 29 at 36. The piston rod 5i of the air cylinder Sii is pivotally connected to the swaging lever 52 by a special pivot connection 52. A piston is connected to the piston rod 5| and operates in the cylinder 30, referring particularly to Figures 4 and 5.

The position of this piston is controlled by a special air control valve 44. A piston rod 43 operates within this valve and has pistons 43 forming part thereof. An air supply line 4l enters the body oi the valve di! between the pistons 43. When the valve is in the position shown in Figure 4, air will enter between the pistons it into the manifold 49 and behind the piston 5t. This will move the piston rod 5i in the direction of the arrow, pulling the swaging lever 52 for swaging the tooth.

A valve operating lever di) is pivotally mounted A spring "t5 is connected to one end of this valve operating lever at 45', the opposite end oi the spring being connected to the piston rod 113 of the valve All. When the control lever 39 is brought to the position shown in Figures 1 and 2, it rocked the valve operating lever 4S on its pivot to the position shown in Figure e, thus setting the valve 44 in position to drive the piston forward as indicated in Figure 5 to operate the swaging device.

In Figure 5, the valve is about to return the piston 5t to that position shown in Figure 4, air entering between the valve pistons i8 and into the manifold 53 against the piston 5i), which will return the swaging lever 52 to the position shown in Figures lv and 2. When the lever 45 is released by freeing it from the control lever 39, the spring Lit will return the piston rod 43 or the valve 4l! to the position shown in Figure 5.

i will now describe the operation of my new and improved gang saw swaging tool. The movable clamping member 8 will be in open position due to the pull of the spring 2i? on the lever Il, which pivots the said lever about its pivot shaft i3. in the event the air supply has been shut oir` from the pipe Iii to the cylinder I5, but in the event the lever it was in the position shown in Figure 3, the lever would first have to be moved to actuate the valve to exhaust position, exhaust the air from the cylinder l5, at which time the spring would open the movable clamping member 8.

When the clamps have been separated the gang saw A is dropped in place, coming to rest on the supporting brackets 23. The hand wheel 25 would then be rotated to either raise or lower the said brackets until the saw was brought to the proper elevation, then the valve lever I9 would be moved to the position shown in Figure 3, which would apply air to the cylinder i 5, forcing its piston rod I6 towards the lever ii, pivoting the said lever about its pivot shaft i3, closing the movable clamping member t against the saw and the stationary clamping member li. The lever I9' will remain in this position, applying a constant air pressure within the cylinder i5, holding the clamping members tightly closed.

In the operation of the swage 28, the swage is dropped down over the desired tooth of the saw, the control lever 38 is forced forward towards the cylinder 3Q, clamping the swage to the tooth in question and striking the valve operating lever 4S, positioning the air valve 4d in the position shown in Figure Al. Air will enter from the pipe fi'.' between the pistons through the manifold 49, behind the piston 5d, forcing the same to the left and pulling the swaging lever E@ therewith, swaging the tooth.

Next the operator will pull the control lever 39 to the right releasing the swage from the tooth, permitting the lever it to take the broken line position, Figure 4, permitting the spring d5 to position the valves d3 as indicated in Figure 5, allowing air to enter from the pipe il into the manifold 53, behind the piston 5@ forcing the piston rod 5 iV to the right, together with the swaging lever E2. The operator then liits the swage up and over to the next tooth, at which time he will force the control lever Si) forward repeating another cycle oi operation.

The exhaust air from the cylinder ti] can escape by the valve piston rod it as its guides are loose fitting. My clamp and swage are quick of action with ease of operation.

What I claim is:

l. A swaging machine, comprising a saw clamp, means for operating the saw clamp, a track, a carriage mounted on the track, a swaging device mounted on the carriage above the clamp including a control lever and a swaging lever, fluid operated means including a valve, a cylinder pivoted at one end to the carriage, a piston in the cylinder, and a piston rod pivotaliy connected to the swaging lever, a pivotally mounted valve operatingr lever connected to the valve, one end of said valve operating lever being in the path of movement oi the control lever, whereby when the control lever is operated it will operate the valve operating lever to admit pressure to advance the piston and actuate the swaging lever to swage a tooth held by the clamp, and means for reversing the valve to return the piston and swaging lever to normal position when the control lever turned to normal position.

2. A swaging machine, as defined in ciaim l, wherein the means for operating the clamp consists of a pivotally mounted yoize connected at its upper end to the clamp, a iiuid operated piston and piston rod, the piston rod being pivoted to the yoke, a fluid supply pipe for supplying fluid to the piston, a valve in the pipe ior controlling the uid, and a spring for returning the yolre to normal position when fluid pressure is relieved from the piston.

3. A swaging machine, comprising a frame, a xed clamping member, a movable clamping member, rails carried by the clamping members, a carriage mounted on the rails, .sv/aging mechanism mounted on the carriage above the clamping members, a yoke secured to and depending from the movable clamping member, a shaft on the frame on which the yoire is mounted, a piston rod pivoted to the lower end or" the yoke, a piston on the rod, a cylinder to receive the piston, a, fluid supply pipe communicating with the rear end of the cylinder to force the piston in one direction to close'the clamping members to permit use of the swaging device in any position throughout the length of the clamping members, a valve in the pipe to control the admission and exhaustion of fluid in the cylinder, and a spring attached at one end to the cylinder and at its opposite end to the yoke to return the yoke and movable clamp to normal position when uid is exhausted from the cylinder.

4. A swaging machine, comprising a clamp, a pair of rails mounted on the clamp, a carriage having depending legs provided with rollers which ride on the rails, a swaging device supported on the carriage including a swaging lever and a control lever, a cylinder mounted on the carriage, a piston in the cylinder, a rod connected to the piston and pivoted at its outer end to the swaging lever, a valve for controlling uid pressure in the cylinder including a stem, a valve operating lever pivotally mounted on the cylinder and having one end in the path of movement of the control lever,

6 a spring attached at one end to the end of the pivotally mounted valve operating lever and its other end attached to one end of the stem, a second. spring connected to the opposite end of the stem, whereby when the control lever is operated it will swing the valve operating lever and actuate the Valve to admit uid pressure to the piston and to actuate the swaging device, and upon reversal of the movement of the control lever the spring connected to the stem and the cylinder will operate the valve for fluid to release the swaging lever,

RALPH S. RICHARDSON.

References Cited in the file of this patent UNITED STATES PATENTS YNumber Name Date 1,653,827 Trimble Dec. 27, 1927 1,732,217 Breest et al Oct. 22, 1929 1,824,349 Horton et al Sept. 22, 1931 1,863,910 Morey June 21, 1932 2,190,920 Hanchett Feb. 20, 1940 

